Merge branch 'main' into dev-scene

README.md

@@ -15,7 +15,7 @@ A WIP server emulator for Genshin Impact 2.3-2.6
 # Running the server and client
 
 ### Prerequisites
-* Java 8 JDK
+* JDK-8u202 ([mirror link since Oracle required an account to download old builds](https://mirrors.huaweicloud.com/java/jdk/8u202-b08/))
 * Mongodb (recommended 4.0+)
 * Fiddler Classic
 
@@ -29,7 +29,8 @@ A WIP server emulator for Genshin Impact 2.3-2.6
 ½. Create an account using command below
 1. Run Fiddler and turn on `Decrypt https traffic` in setting 
 2. Set your hosts file to redirect at least api-account-os.hoyoverse.com and dispatchosglobal.yuanshen.com to your dispatch server ip. Or use Fiddler with script from [https://github.lunatic.moe/fiddlerscript](https://github.lunatic.moe/fiddlerscript) (Recommended for beginners)
-3. yoink
+3. If you're using Fiddler, change the default port there (Tools -> Options -> Connections) to anything other than 8888, otherwise the server won't boot.
+4. yoink
 
 ### Server console commands
 
@@ -58,3 +59,4 @@ There is a dummy user named "Server" in every player's friends list that you can
 * If compiling wasnt successful, please check your JDK installation (must be JDK 8 and JDK's bin PATH variable is correct)
 * My client doesn't connect, doesn't login, 4206, etc... - Mostly your fiddler is the issue, make sure it running on another port except 8888
 * Startup sequence: Mongodb > The server > Fiddler > Client
+* If `4206` error constantly prompt up, try to use [jdk-8u202-b08](https://mirrors.huaweicloud.com/java/jdk/8u202-b08/) instead of other versions of JDK

src/main/java/emu/grasscutter/commands/PlayerCommands.java

@@ -4,6 +4,7 @@ import java.lang.reflect.Modifier;
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Map;
 
 import emu.grasscutter.data.GenshinData;
 import emu.grasscutter.data.def.ItemData;
@@ -23,7 +24,9 @@ import emu.grasscutter.server.packet.send.PacketItemAddHintNotify;
 import emu.grasscutter.utils.Position;
 
 public class PlayerCommands {
-	private static HashMap<String, PlayerCommand> list = new HashMap<String, PlayerCommand>();
+	private static HashMap<String, PlayerCommand> commandList = new HashMap<String, PlayerCommand>();
+	private static HashMap<String, PlayerCommand> commandAliasList = new HashMap<String, PlayerCommand>();
+
 	
 	static {
 		try {
@@ -36,22 +39,19 @@ public class PlayerCommands {
 			    	
 			    	if (commandAnnotation != null) {
 			    		command.setLevel(commandAnnotation.gmLevel());
+						command.setHelpText(commandAnnotation.helpText());
 						for (String alias : commandAnnotation.aliases()) {
 			    			if (alias.length() == 0) {
 			    				continue;
 			    			}
 
-			    			String commandName = "!" + alias;
-					    	list.put(commandName, command);
-					    	commandName = "/" + alias;
-					    	list.put(commandName, command);
+							String commandName = alias;
+							commandAliasList.put(commandName, command);
 			    		}
 			    	}
 
-			    	String commandName = "!" + cls.getSimpleName().toLowerCase();
-			    	list.put(commandName, command);
-			    	commandName = "/" + cls.getSimpleName().toLowerCase();
-			    	list.put(commandName, command);
+			    	String commandName = cls.getSimpleName().toLowerCase();
+			    	commandList.put(commandName, command);
 			    }
 		
 			}
@@ -68,33 +68,54 @@ public class PlayerCommands {
 			return;
 		}
 
-		//
-		String first = split[0].toLowerCase();
-		PlayerCommand c = PlayerCommands.list.get(first);
+		String first = split[0].toLowerCase().substring(1);
+		PlayerCommand c = PlayerCommands.commandList.get(first);
+		PlayerCommand a = PlayerCommands.commandAliasList.get(first);
 		
-		if (c != null) {
+		if (c != null || a != null) {
+			PlayerCommand cmd = c != null ? c : a;
 			// Level check
-			if (player.getGmLevel() < c.getLevel()) {
+			if (player.getGmLevel() < cmd.getLevel()) {
 				return;
 			}
 			// Execute
 			int len = Math.min(first.length() + 1, msg.length());
-			c.execute(player, msg.substring(len));
+			cmd.execute(player, msg.substring(len));
 		}
 	}
 	
 	public static abstract class PlayerCommand {
 		// GM level required to use this command
 		private int level;
+		private String helpText;
+
 		protected int getLevel() { return this.level; }
 		protected void setLevel(int minLevel) { this.level = minLevel; }
 
+		protected String getHelpText() { return this.helpText; }
+		protected void setHelpText(String helpText) { this.helpText = helpText; }
+
 		// Main
 		public abstract void execute(GenshinPlayer player, String raw);
 	}
 	
 	// ================ Commands ================
 
+	@Command(aliases = {"h"}, helpText = "Shows this command")
+	public static class Help extends PlayerCommand {
+
+		@Override
+		public void execute(GenshinPlayer player, String raw) {
+			String helpMessage = "Grasscutter Commands: ";
+			for (Map.Entry<String, PlayerCommand> cmd : commandList.entrySet()) {
+
+				helpMessage += "\n" + cmd.getKey() + " - " + cmd.getValue().helpText;
+			}
+
+			player.dropMessage(helpMessage);
+		}
+	}
+	
 	@Command(aliases = {"g", "item", "additem"}, helpText = "/give [item id] [count] - Gives {count} amount of {item id}")
 	public static class Give extends PlayerCommand {
 		@Override

src/main/java/emu/grasscutter/commands/ServerCommands.java

 package emu.grasscutter.commands;
 
 import java.lang.reflect.Modifier;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.data.GenshinData;
@@ -68,6 +70,35 @@ public class ServerCommands {
 		}
 	}
 
+	public static class sendMsg extends ServerCommand {
+		@Override
+		public void execute(String raw) {
+			List<String> split = Arrays.asList(raw.split(" "));
+
+			if (split.size() < 2) {
+				Grasscutter.getLogger().error("Invalid amount of args");
+				return;
+			}
+
+			String playerID = split.get(0);
+			String message = split.stream().skip(1).collect(Collectors.joining(" "));
+
+
+			emu.grasscutter.game.Account account = DatabaseHelper.getAccountByPlayerId(Integer.parseInt(playerID));
+			if (account != null) {
+				GenshinPlayer player = Grasscutter.getGameServer().getPlayerById(Integer.parseInt(playerID));
+				if(player != null) {
+					player.dropMessage(message);
+					Grasscutter.getLogger().info(String.format("Successfully sent message to %s: %s", playerID, message));
+				} else {
+					Grasscutter.getLogger().error("Player not online");
+				}
+			} else {
+				Grasscutter.getLogger().error(String.format("Player %s does not exist", playerID));
+			}
+		}
+	}
+	
 	public static class Account extends ServerCommand {
 		@Override
 		public void execute(String raw) {

src/main/java/emu/grasscutter/database/DatabaseHelper.java

@@ -95,7 +95,7 @@ public class DatabaseHelper {
 		return cursor.next();
 	}
 	
-	private static Account getAccountByPlayerId(int playerId) {
+	public static Account getAccountByPlayerId(int playerId) {
 		MorphiaCursor<Account> cursor = DatabaseManager.getDatastore().createQuery(Account.class).field("playerId").equal(playerId).find(FIND_ONE);
 		if (!cursor.hasNext()) return null;
 		return cursor.next();

src/main/java/emu/grasscutter/game/managers/ChatManager.java

 package emu.grasscutter.game.managers;
 
+import emu.grasscutter.Grasscutter;
 import emu.grasscutter.commands.PlayerCommands;
 import emu.grasscutter.game.GenshinPlayer;
 import emu.grasscutter.net.packet.GenshinPacket;
@@ -25,7 +26,7 @@ public class ChatManager {
 		}
 				
 		// Check if command
-		if (message.charAt(0) == '!') {
+		if (message.charAt(0) == '!' || message.charAt(0) == '/') {
 			PlayerCommands.handle(player, message);
 			return;
 		}